Search results for "RATES"

Evaluating diagnostic indicators of urogenital Schistosoma haematobium infection in young women: A cross sectional study in rural South Africa

2018

BackgroundUrine microscopy is the standard diagnostic method for urogenital S. haematobium infection. However, this may lead to under-diagnosis of urogenital schistosomiasis, as the disease may present itself with genital symptoms in the absence of ova in the urine. Currently there is no single reliable and affordable diagnostic method to diagnose the full spectrum of urogenital S. haematobium infection. In this study we explore the classic indicators in the diagnosis of urogenital S. haematobium infection, with focus on young women.MethodsIn a cross-sectional study of 1237 sexually active young women in rural South Africa, we assessed four diagnostic indicators of urogenital S. haematobium…

Pleistocene allopatric differentiation followed by recent range expansion explains the distribution and molecular diversity of two congeneric crustac…

2021

AbstractPleistocene glaciations had a tremendous impact on the biota across the Palaearctic, resulting in strong phylogeographic signals of range contraction and rapid postglacial recolonization of the deglaciated areas. Here, we explore the diversity patterns and history of two sibling species of passively dispersing taxa typical of temporary ponds, fairy shrimps (Anostraca). We combine mitochondrial (COI) and nuclear (ITS2 and 18S) markers to conduct a range-wide phylogeographic study including 56 populations of Branchinecta ferox and Branchinecta orientalis in the Palaearctic. Specifically, we investigate whether their largely overlapping ranges in Europe resulted from allopatric differe…

Povertà e vita. Mendicità e filosofia nel mondo greco

2015

Nel v-iv secolo a. C., la lingua e la cultura greca collocano, come si evince dal Pluto di Aristofane, la povertà in una posizione mediana fra ricchezza e mendicità. Essa si distingue dai due estremi della scala soltanto da un punto di vista quantitativo e costituisce un utile incentivo alla vita associata e al progresso delle technai. Nei discorsi tucididei di Pericle, l’idea è espressa con chiarezza: le technai, da esercitare con moderazione e in vista del bene comune, concorrono a fare uscire il cittadino ateniese dalla povertà e dall’oscurità sociale, promuovendone la partecipazione politica, in un’ottica di reciprocità orizzontale. L’eccezione più vistosa a questo paradigma che mette i…

Love of Enemies in the Context of Antiquity

2001

Do we find the principle of ‘loving one's enemies’ or precursors thereof in pre-Christian antiquity? In the Greco-Roman tradition we find as a common maxim ‘helping friends and harming enemies’ combined with the talio and the Golden Rule. Only Socrates and some Roman stoics recommend never to take revenge. In the OT Lev 19.18 may possibly be interpreted as a commandment of loving one's enemies. The first to have understood Lev 19.18 in this sense seems to be Jesus. Christians have too rarely lived up to his commandment.

Stage Theory and Proper Names

2011

In the contemporary debate about the nature of persistence, stage theory is the view that ordinary objects (artefacts, animals, persons, etc.) are instantaneous and"persist" by being suitably related to other instantaneous objects (see T. Sider 1996, 2001 and K. Hawley 2001, both defenders of the view). In this paper I focus on the issue of what stage theorists should say about the semantics of ordinary proper names, like"Socrates" or"London". This is how I will proceed: after discussing the general features of stage theory (section 1), I will consider the remarks that stage theorists actually make about the semantics of proper names (section 2). I will then point to some hitherto unnoticed…

Science and logic

2009

Determination of Temperature by Stimulated Raman Scattering of Molecular Nitrogen, Oxygen, and Carbon-Dioxide

1993

0721-7269; We have determined the temperature from SRS spectra of N2-N2, N2-CO2, O2-O2, and CO2-CO2 recorded in wide pressure and temperature ranges. The fitting procedure takes simultaneously into account the Dicke effect and motional narrowing. We have quantified the accuracy of the MEG and ECS-P models for rotational relaxation. The temperature extracted from each model is compared with thermocouple measurements. The influence of vibrational broadening and shifting is discussed in detail.

Evidence for the Existence of an Effective Interfacial Tension between Miscible Fluids: Isobutyric Acid-Water and 1-Butanol-Water in a Spinning-Drop …

2006

We report definitive evidence for an effective interfacial tension between two types of miscible fluids using spinning-drop tensiometry (SDT). Isobutyric acid (IBA) and water have an upper critical solution temperature (UCST) of 26.3 degrees C. We created a drop of the IBA-rich phase in the water-rich phase below the UCST and then increased the temperature above it. Long after the fluids have reached thermal equilibrium, the drop persists. By plotting the inverse of the drop radius cubed (r(-)(3)) vs the rotation rate squared (omega(2)), we confirmed that an interfacial tension exists and estimated its value. The transition between the miscible fluids remained sharp instead of becoming more…

Blockage of cell wall receptors for yeast killer toxin KT28 with antimannoprotein antibodies.

1990

Binding of yeast killer toxin KT28 to its primary cell wall receptor was specifically blocked with polyclonal antimannoprotein antibodies which masked all toxin-binding sites on the surface of sensitive yeast cells. By indirect immunofluorescence, it was shown that KT28 binds to the cell wall mannoprotein and that the toxin resistance of mannoprotein mutants (mnn) of Saccharomyces cerevisiae was due to a lack of killer toxin-binding sites within the yeast cell wall. Structural analysis of acetylated mannoprotein from KT28-resistant mutant strains identified the outer mannotriose side chains as the actual killer toxin-binding domains.

Molecular structure of the cell wall receptor for killer toxin KT28 in Saccharomyces cerevisiae

1988

The adsorption of the yeast killer toxin KT28 to susceptible cells of Saccharomyces cerevisiae was prevented by concanavalin A, which blocks the mannoprotein receptor. Certain mannoprotein mutants of S. cerevisiae that lack definite structures in the mannan of their cell walls were found to be resistant to KT28, whereas the wild-type yeast from which the mutants were derived was susceptible. Isolated mannoprotein from a resistant mutant was unable to adsorb killer toxin. By comparing the resistances of different mannoprotein mutants, information about the molecular structure of the receptor was obtained. At least two mannose residues have to be present in the side chains of the outer chain …